Commit Graph

19 Commits

Author SHA1 Message Date
Manman Ren
01cb18ea08 Dwarf: use a single line table to generate assembly when .loc is used.
This is to fix PR15408 where an undefined symbol Lline_table_start1 is used.
Since we do not generate the debug_line section when .loc is used,
Lline_table_start1 is not emitted and we can't refer to it when calculating
at_stmt_list for a compile unit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182344 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-21 00:57:22 +00:00
David Blaikie
c462db6d66 Revert "Revert "PR14606: debug info imported_module support""
This reverts commit r179840 with a fix to test/DebugInfo/two-cus-from-same-file.ll

I'm not sure why that test only failed on ARM & MIPS and not X86 Linux, even
though the debug info was clearly invalid on all of them, but this ought to fix
it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179996 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-22 06:12:31 +00:00
Eric Christopher
41201ed06f Revert "PR14606: debug info imported_module support"
This reverts commit r179836 as it seems to have caused test failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179840 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-19 07:47:16 +00:00
David Blaikie
bcb81360a2 PR14606: debug info imported_module support
Adding another CU-wide list, in this case of imported_modules (since they
should be relatively rare, it seemed better to add a list where each element
had a "context" value, rather than add a (usually empty) list to every scope).
This takes care of DW_TAG_imported_module, but to fully address PR14606 we'll
need to expand this to cover DW_TAG_imported_declaration too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179836 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-19 06:57:04 +00:00
David Blaikie
72dfb052ab Revert "Adding DIImportedModules to DIScopes."
This reverts commit 342d92c7a0.

Turns out we're going with a different schema design to represent
DW_TAG_imported_modules so we won't need this extra field.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178215 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-28 02:44:59 +00:00
David Blaikie
342d92c7a0 Adding DIImportedModules to DIScopes.
This is just the basic groundwork for supporting DW_TAG_imported_module but I
wanted to commit this before pushing support further into Clang or LLVM so that
this rather churny change is isolated from the rest of the work. The major
churn here is obviously adding another field (within the common DIScope prefix)
to all DIScopes (files, classes, namespaces, lexical scopes, etc). This should
be the last big churny change needed for DW_TAG_imported_module/using directive
support/PR14606.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178099 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-27 00:07:26 +00:00
David Blaikie
4b52a88e90 Refactor out the DIFile parameter to DILexicalBlock to refer to the raw file/directory pair
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177742 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22 17:33:20 +00:00
David Blaikie
c204410d6b Reorder the DIFile field in DILexicalBlock to become a prefix common with other DIScopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177703 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22 05:47:44 +00:00
David Blaikie
bb4e619cd9 Refactor the filename/directory information in DISubprogram to refer directly to the pair rather than the DIFile.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177677 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21 23:08:34 +00:00
David Blaikie
ebb5183a2f Remove unused field in DISubprogram
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177661 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21 20:28:52 +00:00
David Blaikie
00c5c5d467 Debug info: refactor the first field of DICompileUnit to be a raw file/directory pair
This removes the DICompileUnit special case from DIScope.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177610 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20 23:58:12 +00:00
David Blaikie
162c800384 Debug Info: Swap the 2nd and 3rd parameters to DICompileUnit to match the common DIScope prefix
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177595 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20 22:52:54 +00:00
David Blaikie
404ecce890 Remove unused field in DICompileUnit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177590 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20 22:34:33 +00:00
David Blaikie
b4cf0ab22b Split out filename & directory from DIFile to start generalizing over DIScopes
This is the first step to making all DIScopes have a common metadata prefix (so
that things (using directives, for example) that can appear in any scope can be
added to that common prefix). DIFile is itself a DIScope so the common prefix
of all DIScopes cannot be a DIFile - instead it's the raw filename/directory
name pair.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177239 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-17 21:13:55 +00:00
David Blaikie
de3077ae6b Refactor filename/directory in DICompileUnit into a DIFile
This is the next step towards making the metadata for DIScopes have a common
prefix rather than having to delegate based on their tag type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176913 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13 00:01:35 +00:00
David Blaikie
46561ce249 Remove unused "isMain" field from DICompileUnit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176910 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12 22:43:04 +00:00
David Blaikie
14891447ff Update debug info test cases with empty SplitDebugFilename field.
This could be 'null' or the empty string, DIDescriptor::getStringField
coalesces the two cases anyway so it's just a matter of legible/efficient
representation.

The change in behavior of the DICompileUnit::get* functions could be
subsumed by the full verification check - but ideally that should just be an
assertion if we could front-load the actual debug info metadata failure paths.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176907 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12 22:25:36 +00:00
Manman Ren
3de61b4c01 Debug Info: store the files and directories for each compile unit.
We now emit a line table for each compile unit. To reduce the prologue size
of each line table, the files and directories used by each compile unit are
stored in std::map<unsigned, std::vector< > > instead of std::vector< >.

The prologue for a lto'ed image can be as big as 93K. Duplicating 93K for each
compile unit causes a huge increase of debug info. With this patch, each
prologue will only emit the files required by the compile unit.

rdar://problem/13342023


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176605 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07 01:42:00 +00:00
Manman Ren
43213cf1ac Dwarf: support for LTO where a single object file can have multiple line tables
We generate one line table for each compilation unit in the object file.
Reviewed by Eric and Kevin.

rdar://problem/13067005


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174445 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-05 21:52:47 +00:00